SWIM has noticed that every time he does a moderate/large dose of acid, he tends to get the feeling in the back of his throat that there is hair that needs to be pulled out.. and very often he tries to pull it out to no avail.

Is this a commonality?.. and why does this happen?

SWIM has done 2 mild doses, 2 medium and 1 medium/strong and never had that happen.
Can't really even think of a reason why it would, haha

bronchialconstriction as well as stimulation to the endocrine glands

Interesting..

Thinking about it though, the feeling is mostly apparent on the lips and the tongue.

It constantly feels like SWIM has to pull out a thread from the back of his mouth.

I have that sometimes. Got it last friday infact! Very annoying. But i found that if i stopped thinking about it it eventually went away. One time it was so bad i was actually sick (one of the worst experiences of my life).

I also get the feeling that all my muscles are really tight (on a pretty high dose anyway) and that any movement i make i will pull all the tiny muscles (fingers etc).

I remember getting that when I took LSD, or someone would say do you have a hair on your tounge to be funny then you couldnt stop thinking theres a hair there, very annoying lol

i, liek many of you i presume half long anglo hippy jesus hair and often find i actually do get it in my mouth and all over me while one high dose of many things.